Abstract : During this period we have directed effort toward fabrication of the resonators required for the preproduction and pilot production filters. Also, a group of 6.0 Mc ceramic ladder filters were assembled and evaluated for the correlation of temperature dependency of the assembled filters' center frequencies to the frequency temperature characteristics of the resonators. Effort was also directed toward packaging 4.3 Mc and 6.0 Mc single resonator filters. Units were assembled, and the electrical characteristics which would be affected by the packaging were evaluated. (Author)